This article seems to conflate "Time it takes for 50% of the CO2 increase to be removed from the atmosphere" with "time it takes a specific molecule that was re

This article seems to conflate "Time it takes for 50% of the CO2 increase to be removed from the atmosphere" with "time it takes a specific molecule that was released to the atmosphere to be removed". The former is more relevant to the discussion, and is stated as ~30 years.